Update CI configs.

Author: XhmikosR

.travis.yml

@@ -4,9 +4,8 @@ language: node_js
 
 node_js:
   - "4"
-  - "5"
   - "6"
-  - "iojs"
+  - "7"
 
 matrix:
   fast_finish: true

appveyor.yml

@@ -9,10 +9,10 @@ environment:
       platform: x64
     - nodejs_version: "4"
       platform: x86
-    - nodejs_version: "5"
-      platform: x86
     - nodejs_version: "6"
       platform: x86
+    - nodejs_version: "7"
+      platform: x86
 
 install:
   - ps: Install-Product node $env:nodejs_version $env:platform